Simple Roll Stand

After I got different material which rolls didn't fit in my FreeSculpt I decided to design a simple stand for these rolls. It is supposed to snap together, worked better than I thought.
This is the first part I designed on my own.

Additional Information about the Design:
When I designed it, I wanted 2 identical parts. Additionally I chose the design to be printed without support structure, so I kept it as a flat design. The holes are supposed to give additional strength after it was printed with 10% filling to keep material use low.
Inner Corners got a radius to prevent breaking when snapping together